Incidentally this is actually what it really comes down to with a lot of conservative culture beliefs. The real problem is not even the belief itself, but the belief behind it that they should be able to force that belief on the whole nation and/or world.
Don't believe in gay marriage? Fine, don't get gay married. Problem solved.
Don't believe in abortion? By all means, don't get an abortion.
You believe strongly in standing for and reciting the pledge of allegiance and proudly saluting the flag? Go for it.
Don't believe in expressing yourself as a gender other than the one you were assigned at birth? Then don't.
You believe in the bible and the ten commandments? Feel free to paste that shit all over your home.
But of course that's not what the issue at hand really is. It's really about the right to force the rest of the world to bow to what you believe.